Math, asked by avneetjolly, 1 year ago

in triangle ABC AB=BC,angle B=80 Then angle A=?

avneetjolly: pls someone tell the answer

aniketkushwaha070320: In a triangleABC a+b+c=180 AB=BC AngleB=80 Let angle a and c be x because AB=BC x+x+80=180 2x = 180-80 X = 100÷2 X=50 Angle A is50

avneetjolly: thanks

aniketkushwaha070320: You're welcome brush.

aniketkushwaha070320: *brush

aniketkushwaha070320: *Bruh

Answers

Answered by youDecide

angle a =50 °. >>>>>>>

avneetjolly: no

avneetjolly: answer is 50 degree given

Answered by UNICORN123456

Answer:

In triangle ABC, BC=AB and angle B= 80, then angle A = 50

Step By Step Explanation:

Given,

triangle ABC, BC = AB which means ABC is an isosceles triangle.

We know the sum of angles in a triangle is 180°. Since it is an isosceles triangle the measure of two angles will be same.

Let ∠A = x and ∠c = x

We know, Sum of all angles = 180°

x+x+80° = 180°

2x= 180°-80°

2x=100°

x= 100÷2=50

∴ the measure of ∠A = 50°

hOpE iT HeLpEd !!!

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